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how much can you rely on the FWHM from CCDStack
i was looking through some of my data i noticed something strange. some of the images were really bad but when i look at the FWHM score in ccdstack it isnt represented. for example, both the attached images are take with the same filter, the first had a FWHM of 7.9 and the second was apparently worse at FWHM 7.96. does anyone know the reason for this?
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